Means for hanging laterally-moving doors.



No. 992,224, Patented Aug. 29,1899. m. cosszv.

MEANS FOR HANGING LATERALLY MOVING DOORS.

(Application filed Oct. 8, 1896.) (No Model.)

2 Sheets$heet "I WITNESSES: W INVENTOI? m: uonm's PETERS c0. mamuma, wAsnmcToN. n, c.

No. 632,224. Patented Aug. 29, I899.

- m. cossav.

MEANS FOR HANGENG LATEBALLY MOVIING DOORS.

(Application filed Oct. 8, 189B.)

(No Model.) 2 Sheets-Sheet 2..

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WITNESSES IN VENTOR with M MYRON oossEY, OF NEW YORK, N. Y.

MEANS FOR HANGING LATERALLY -IVIOVING DOORS.

SPECIFICATION formingpart of Letters Patent No. 632,224, dated August 29, 1899. Application filed October 8, 1898. Serial No. 693,057. (No model.)

To all whom it ntay concern:

Be it known that I, MYRoN COSSEY, a citizen of the United States, and a resident of New York, (Brooklyn,) in the coun ty of Kings and State of New York, have invented certain new and useful Improvements in Hanging I.aterally-l\loving Doors, of which the follow.-. ing is a specification.

My invention consists of a means of hangin g laterally-movingdoors from a bar or track in conjunction with other bars or tracks and between which are placed balls to form the bearing between said bars or tracks, the objects being to form a bearing in which there.

is the least possible resistance from friction and to make the door noiseless in its action. I attain these objects in the mechanism shown in the accompanying drawings, in which Figure 1 is .an elevation of a frame surrounding an elevator-door with the door and its hanging mechanism attached to the frame. Fig. 2 is a sectional view taken through the door and tracks from which it is hung. Fig. 3 is a plan and elevation of a bumper to be secured to the top of the door. Fig. 4 shows in plan and end view stops for the bumper to act against; and Fig. 5, Sheet 2, shows in elevation and sectional view a modified form of my door and tracks.

The frame A, surrounding the door, consists of any suitable material and is formed of two uprights at the sides, connected together at the bottom bya sill D, which forms a guide for the door, either by a groove or track formed on same. At or near the top the sides are connected by a cross-bar or transom, to which the mechanism from which the door is hung can be attached. B forms a stationary panel about half the opening in the framework, and Ois the laterally-moving door. As shown, the door has pins on the lower side for guiding it while moving over the sill.

To the top of the door there is secured a double-grooved bar or track E by means of the bracket 1), Figs. 1 and 2., or hangers b, Fig. 5. This movable track E is set symmetrically over the door and is about equal to the width of the door, or, what is the same thing, about equal to the lateral movement to be imparted to the door. Above and below this track E, I fit, by means of studs f or otherwise, two single-grooved tracks d d", and between the fixed and movable tracks (I, (Z, and E are placed movable antifriction devices or bearings, preferably in' the form of spherical balls to, running in the adjacent grooves of the several tracks, as shown in the drawings. For the sake of economy and simplicity I prefer'to use'but three of these balls, especially as this enables me to make one of the fixed tracks much shorter than the other two. I prefer to make the uppermost track (Z the short one and about halfv the length of the others, as shown in the drawings, there being in that case but'one ball a between the upper fixed track and the movable traok E and two balls between the said movable track and lower fixed track. This last is about of the same length as the track E. These several bearings are so arranged with reference to each other that the single bearing will always be in a vertical line between the other two bearings, and one of the bearings (the lower left hand hearing) will always be central over the door. to sustain it. I place pins or stops at at the ends and on the under side of the upper track and also at the ends and under side of the middle track and a similar pin on the upper side of the lower track near its center, these pins or stops being such as to insure the maintenance of the balls in proper relative positions to each other. As shown more clearly in Fig. 5, where the studs fare fitted into the tracks (Z d and the hangers are secured to the movable track E, I form slots m to provide for necessary adjustment.

At the top of the door near its center I provide a double-acting bumper h with rubber i, and I provide on the under side of the lower track (1' near its ends the stops 6, so that when the door is moved to either of its extreme positions the described bumper will stop the door at the proper point.

The advantage of the described construction of movable track set symmetrically over the door and of a length about equal to the width of the door and between the upper and lower fixed tracks with intermediate movable antifriction-bearings, one of which is over the center of the door, is that it gives great ease of movement of the door, prevents binding of the latter, and prevents it being lifted out of position, dispensing with all other guides. The action of the mechanism is so easy and the friction between the parts so small that the force necessary to move the heaviest door is very small indeed.

I do not wish to limit myself to the exact construction shown, for tracks with rollers, either the tracks or rollers being grooved, could be employed. Furthermore, instead of a straight track and door the same may be curved to fit any radius, as would be required in the case of a circular well-hole.

I claim as my invention 1. A laterally-movable door provided with a track symmetrically over the top of the door and about equal to the width of the latter and moving with it, in combination with two fixed tracks, one above and one below the movable track and movable antifriction devices between the fixed and movable tracks, as and for the purpose set forth.

2. A laterally-movable door having a double-grooved track secured thereto sy m in etrically over the top of the door, and about equal in length to the width of the door, in combination with two fixed grooved tracks, one above and the other below the movable track and spherical hearings in the said grooves, as and for the purpose set forth.

3. A laterally-movable door with a track secured thereto in combination with upper and lower fixed tracks and three movable antifriction devices or bearings, one on one side of and the other two 011 the other side of the movable track, with the single bearing always in. a vertical line between the other two, substantially as described.

4:. A laterally-movable door with a doublegrooved track in combination with upper and lower tracks having grooves to correspond with the grooves in the movable track, and three balls, one on one side and two on the other side of the movable track, the fixed track on the single-ball side being shorter than the other fixed track, substantially as and for the purpose set forth.

5. A laterally-movable door with a doublegrooved track about equal in length to the width of the door, in combination with a lower fixed track also about equal in length to the width of the door and an upper fixed track about one-half the length of the lower track and three spherical ball-bearings, two between the movable track and the lower fixed track and one between the movable track and the upper short fixed track, as and for the purpose set forth.

6. A laterally-movable door having a track fixed symmetrically to the door over its top with upper and lower fixed tracks and three movable antifriction-bearings, one between the upper fixed track and the intermediate movable track and two between the latter and the bottom track, and one of the bottom bearings being over the center of the door, as and for the purpose described.

Signed at Brooklyn, in the county of Kings and State of New York, this 3d day of Octoher, A. D. 1898.

W. H. AGRICOLA, ()mvnn EDWARDS. 

